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US Patent 11918989 Process for regeneration of hydrogenation catalysts

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Patent attributes

Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Johan Anton0

Thomas Schneider0

Johannes Kraft0

Michael Grass0

Grzegorz Ziomek0

Date of Patent

March 5, 2024

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Patent Application Number

175473300

Date Filed

December 10, 2021

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Patent Citations

US Patent 8598060 Method of regenerating ruthenium catalysts for the ring hydrogenation of phthalates

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US Patent 10501392 Method for obtaining alcohols from aldehydes II

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US Patent 8895791 Method of regenerating ruthenium catalysts suitable for hydrogenation

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US Patent 10787414 Diisopentyl terephthalate

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US Patent 7361714 Catalyst and method for hydrogenating aromatic compounds

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US Patent 7388119 Method for the hydrogenation of aromatic compounds with hydrogen containing residual gas

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Patent Primary Examiner

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CPC Code

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Patent abstract

The invention provides a process for regenerating a catalyst used for the hydrogenation of an aromatic species, consisting of several steps. First the system is purged with nitrogen, then air is metered in stepwise, and the addition of nitrogen is subsequently ended until only air is present.

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